perl function gmtime

The gmtime function is a built-in Perl function that is used to convert a Unix timestamp to a 9-element array representing Coordinated Universal Time (UTC).

Here's an example that demonstrates how to use gmtime:

#!/usr/bin/perl

use strict;
use warnings;

# Get the current Unix timestamp
my $timestamp = time();

# Convert the Unix timestamp to UTC
my ($sec, $min, $hour, $day, $month, $year, $wday, $yday, $isdst) = gmtime($timestamp);

# Print the UTC values
print "UTC: $year-$month-$day $hour:$min:$sec\n";

In this example, we use the time function to get the current Unix timestamp, which is the number of seconds since the epoch (January 1, 1970, 00:00:00 UTC). We then pass the timestamp to the gmtime function, which returns a 9-element array representing the year, month, day, hour, minute, second, day of the week, day of the year, and daylight saving time flag in Coordinated Universal Time (UTC). We assign the values to individual variables and then print them to the console in the format year-month-day hour:min:sec.

Note that the gmtime function assumes that the input timestamp is in UTC, so it does not adjust for the local time zone. If you need to convert a timestamp to the local time zone, you can use the localtime function instead.